Spring washer



Sept. J SERGE SPRING WASHER Filed Aug. 12, 1951 EE-m..

Patented Sept. i3,

uosEPE BERGE-,POE -ivION'rcLAIR NEW JERSEY, AssIGNo'Rfro NATIONAL LOGI: 'WASHER COMPANY, OE NEWARK, NEW JERsEY, A CORPORATION OE NEW JERSEY sIiRINe WASHER Application tiled August 12, 1931. Serial No. 556,677.

A lVIy linvention relates to spring washers either of the helical or spiral type and has for itsobject to provide a washer that may be lofcated within a countersunk opening, and to that end is of a general conical shapetthe outer edge adapting itself to said opening, while the inner edge affords a countersunk portion within which the conical shaped head of a screw or bolt, passed through the Washer into the part to be secured, may lit so that both the outer face of the washer and said head will be flush with said part.

In the accompanying drawing,

Figure 1 is a top View of a plain spiral washer made in accordance with my invention- Figure?. is a section at the line 2-2 of Figure 1 Figure 3 is an elevation of a helical shaped washer embodying my invention- Figure 4 is a section at the line 4--4 of Figure 3, and

Figure 5 is a sectional elevation showing my invention applied for use. f

Similar numerals of reference denote like parts in the several figures of the drawing.

Referring to Figures l and 2, l is a plain spiral washer whose outer edge 2 is inclined inwardly and whose inner edge 3 is also inwardly inclined so as to provide a countersink for the purpose hereinafter to be explained.

Referring to Figures 3 and l, the outer edge of the washer 4 is denoted by the numern al 5 and is inclined inwardly, and the inner edge 6 is similarly inclined for the purpose now to be explained.

7 is any part, object or material that is to be secured to any other structure, and this part 7 has a countersunk opening 8 therein.

It is immaterial whether the washer shown at Figure 1k or at Figure 3 is used, since in either instance the washer is placed within the opening 8 and the bolt or screw 9 passed through the washer, the part 7 and the structure to which said part is to be secured, the head 10 of said bolt or Vscrew being of a general conical shape to correspond with the inclined inner .edge of the washer as well as the countersink 8.

If a. screw is employed, its inner end would be threaded and would be driven into said structure to thereby force the washer against e the walls of the opening 8, and the resiliency of the washer would cause it to bind against the head of the screw and prevent the latter from becoming loose, and if a bolt is used it would pass through the part 7 and said structure and a nut would be driven on the threaded end of the bolt to bring about the same result as in the instance of the screw above set forth.

It will therefore be clear that it is immaterial whether the washer be spiral or helical, so long as its outer and inner edges are inclined to correspond to the incline of the' countersunk portion 8, and although at Figure 5, I have indicated a spiral washer, nevertheless, the showing of a helical washer would be identical.

What is claimed is A spring washer adapted for an inclined countersunk opening in a part to be secured to another structure, said washer being split and of helical or spiral form and having its Outer and inner' edges inclined in parallelism, said washer adapted to be used in connection .with a bolt or screw having an inclined head,

JOSEPH BERGE. 

